in simple terms exactly what is a tool bar?

A toolbar is part of a window, often a bar across the top, that contains buttons that execute commands when you click them. Many applications contain toolbars that you can customize so the commands you use frequently are readily available and easily identifiable. Many dialog boxes also contain toolbars.

For many applications, you can specify which toolbars are visible and what icons or text appear on the buttons; consult the application's help screens or documentation for details.

Jerry Im not for sur I ther But i thing they call the tool bat right on top of Yahoo are what ever u have like aol..ect,,,, where it says mai,clander,profile , where u can web seach, ect....i think that is what a toolbar is ur friend kim

PC WORLD:

A toolbar is a set of icons or buttons that are part of a software program's interface or an open window

REAL WORLD:

A bar that has a bunch of douche bags